81642220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11971}}^1$

素因数の和:12022

約数の個数: 48

約数和(自身を含む): 193084416

約数和(自身を除く): 111442196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 11971, 23942, 47884, 59855, 119710, 131681, 239420, 263362, 371101, 526724, 658405, 742202, 1316810, 1484404, 1855505, 2633620, 3711010, 4082111, 7422020, 8164222, 16328444, 20410555, 40821110, 81642220]

約数ペア:

[(1, 81642220), (2, 40821110), (4, 20410555), (5, 16328444), (10, 8164222), (11, 7422020), (20, 4082111), (22, 3711010), (31, 2633620), (44, 1855505), (55, 1484404), (62, 1316810), (110, 742202), (124, 658405), (155, 526724), (220, 371101), (310, 263362), (341, 239420), (620, 131681), (682, 119710), (1364, 59855), (1705, 47884), (3410, 23942), (6820, 11971)]